Doffer for spinning and twisting frames.



' No; 755,450. PATENTED MAR. .22, 1904. N

' D. E. CAREY. DOFFER FOR SPINNING AND TWISTINGYFRAMES.

APPLICATION FILED OUT. 8, 1903. N0 MODEL.

a sums-8111mm;

1/122? 86 8&9 157/672 1501":

THE Noumea PETERS co, PHDTO LITHO,, WASHINGTON, 0. c.

PATENTED MAR. 22, 1904.

D.E.GAREY. DOFFER FOR SPINNING AND TWISTING FRAMES.

APPLICATION TILED OCT-.8, 1903. V

3 SHEETS-SHE.ET2.

H0 MODEL.

Z6FZZOZ1' M 5 PATENTED MAR. 22, 1904. D. E. CAREY.

DOPFER FOR SPINNING AND TWISTING FRAMES.

APPLIOATION FILED OUT. 8, 1903.

3 SHEETS-SHEET 3.

N0 MODEL.

frame provided with my invention.

UNTTEn STATES Patented March 22, 1904.

PATENT @rrrcn.

DOFFER FOR SPINNING AND TWISTING FRAMES.

SPECIFICATION forming part of Letters Patent No. 755,450, dated March 22, 1904.

' Application filed October 8,1903.

To all whom it may concern.-

Be it known that I, DENNIS E. CAREY, of South Lawrence, county of Essex, State of Massachusetts, have invented an Improvement in Doffers for Spinning and Twisting Frames, of which the following description, in connection with the accompanying drawings, is a specification like characters on the drawings representing like parts. i

This invention relates to a mechanism for simultaneously doffing the bobbins on a spinning-frame and simultaneouslyplacing empty bobbins on the spindles after'the wound bob bins have been doifed.

My invention consists of a vertically-movable carrier provided with means for automatically connecting the same with the upper endsof the bobbins while in position on the spindles and means for moving said carrier so that the bobbins will'be doffed, said carrier being further provided with a series of bobbin-holders adapted to conduct empty bobbins onto the spindles after the filled bobbins have been doffed, and means for firmly forcing the bobbins down upon the spindles after they have been placed thereon.

My invention further consists in providing a series of magazines containing a supply of empty bobbins adapted to supply a single bob bin automatically to each bobbin-holder after each dofiing operation has been finished.

For an understanding of my invention reference is made to the accompanying drawings, in which Figure 1 is a front elevation of a spinning- Fig. 2 is a front elevation of one end thereof. Fig. 3. is an end view thereof with the end support removed. Fig. 4 is a cross-sectional view of one of the bobbin-magazines. Figs. 5 and 6 are top and bottom'plan views thereof. Figs. 7 and 8 are detail views representing different positions of the parts while the dofiingoperation is taking place. Figs. 9 and 10 are detail views of one'of the'doffers, Fig. 9 being a transverse section on the line y y of Fig. 10 and Fig. 10 being a central longitudinal section-0n the line 2 of Fig. 9. Figs. 11 and 12 are detail views of the means for pressing the bobbins down on the spindles, Fig. 11 be S'erialNo. 176,296. (No model.)

ing a longitudinal section on the line 0 o of Fig. 12 and Fig. 12 a transverse section on the line 10 w of Fig. 11. Fig. 13 is a plan View of a portion of the carrier. Fig. 14 is a detail view of the yoke for supporting the carrier.

In the drawings, 1 indicates the end supports of a spinning-frame having a series of spindles 2, which are driven in the usual manner, the thread being fed to the bobbins 3 on said spindles, as indicated in Fig. 3 and in the manner well known in this class of machines. Vertical guide rods or standards 4 are secured to each end support 1 and at such intermediate points as may be necessary, as shown in Figs. 1, 2, and 3, and a carrier-bar 5, having sleeves 6, which slide on said guide-rods 4, extends the entire length of the machine and is adapted to be moved up and down in a horizontal position. Ahorizontal shaft9 extends the lengthof the machine and is journaled in fixed bearings secured to the frame, it being arranged at a suitable distance above the line of bobbins, said shaft being provided with a series of drums 8, having cables 7 secured thereto at one end and at their opposite ends a screw-eye 50, which is threaded in a yoke 500, (see Fig. 14,) in which said carrier 5 is supported, whereby said carrier may be raised and lowered on rotation of said shaft. A sprocket 10 is secured to the outer end of said shaft 9, and a chain 11 passes over said sprocket and over a sprocket 13, which is secured to the inner end of a horizontal shaft 14, said shaft '14 being journaled in the frame of the machine. The outer end of said shaft 14 is provided with a crank 15, and the inner end thereof, next to the sprocket 13, is provided with a ratchet-wheel 15, with which a pawl 17 mounted on the frame, is adapted to engage.

Thecarrier-rod 5 has a series of brackets 18 rigidly secured thereto, and an arm 19 is pivoted to each bracket between forwardlyeXtending ears thereon. Said arms 19 are of angular form and are rigidly secured at their lower ends to the front side of a horizontal bar 20, and a series of doffers 22 are clamped between said bar and a bar 21 at intervals corresponding to the distance be- Too tween each spindle. Each of said doders 22 preferably comprise a hollow or tubular caeing or shell, which is open and harm or bellsh a ped at its lower end the upper s t r of each d er being formed with a lindl bore of slightly greater diameter t n that of an ordinary bobbin at its top and said upper portion being flattened at its front and rear sides, as shown in Fig. 9, to provide f i a must which the bars and 21 may be c ampeddanges or shoulders being formed at each side of said faces which engage the ed es of said bars.

latch 23 is pivoted on a pivot 24; in the is front side of each doder, the inner ends of said latches passing through the walls of said doders and progecting a short distance into the bore thereo at ap roximately the meet ing point of the cylin rical and flaring porac tions thereof.

A spring 25, which encircles the pivot 24, acts to throw the inner end or said latch downwardly against the under side of the slot through which said latch passes. The bobs bins 3 are preferably chambered in their upper ends, as shown in Fig. 10, and provided with annular grooves within a shortdistance of said upper ends. A ferrule 26 is preferably placed upon the upper end of each bobbin the lower end of the ferrule being bent into said groove 30' and terminating at the middle thereof and the upper end of the ferrule being bent inwardly into the recess in the upper end of the bobbin, This construction of bobbin and latch is such that when the end of the bobbin is passed into the bore of the dofier a suitable distance the inner end of the latch will enter the groove 30, and thus firmly connect the dolfer and bobbin, said ferrule 26 protecting the tip of the bobbin and preventing the latch from chipping or wearing away the wood adjacent the annular groove. A series of bracket-arms 27 are rigidly secured at suitable intervals to the carrier 5 and extend forward horizontally therefrom, and a liftingrod 28, having a hand-wheel 280 at its end, is journaled in the outer ends of bracket-arms 27. Cables 29 are secured at one end to said rod 28' at suitable intervals, so that they may be wound thereon, and at their opposite ends to the front dofier-bar 20. A pawl 281 is pivoted on one of the brackets 27, and a ratchetwheel 282 is ed on the rod 28. An arm 31 is also pivoted to the bracket 18 upon the same pivot as that of the arm 19, said arm preferably being pivoted between ears formed on theupper end of the arm 19, the latter be ing of such form that the arms 81 may hang vertically in the rear of the arms 19. A bob= bin-deprss comprising a casing 32 is se= cured to the lower ends of the arms 31, said n being preferably made in the form of an inv tro h with side walls which flareeutward attheir ower es. A stra s or band 33, preferably of leat er which is see more or less flexible and less is redat eneendtoehoelrdt, linedaltenecififlhe easi wand attire etlherend tealheelkdb, While is adiustably mounted in! the mmnesin r @Jlildl Of said msing. Aseriesoif l in mey- 71o extending rods scare tethe e w of said casing 32 adt the air side of saidstrap 33, oneoif id r be provided approximately midway between in i mul e 2, and a scrim of suppo-r 37 are reif- 7 5 erably secured in a rt w r n n er at suitable intervals below the strap,so as to prevent undue i of the same. The arms 31 and casing 32 are so arranged that when the doflers are swung down to the position which they be normally assume the upper ends of said doifers will be supported close to the lower edges of the side walls of said casing and directly beneath the same.

A cable 320 is supported upon pulleys mounted on the under side of brackets 27 and extends the entire length of the casing 32. Branch cables are connected to the main cable, and these branches and one end of the main cable pass about sheaves on the casing and are secured to the brackets 27, so that when the opposite end of the cable is pulled the casing will be swung outward.

A series of brackets 38 are secured to the carrier 5 directly above each dofier 22 or spindle 2, said brackets beingprovided with vertically-extending apertures, in each of which a tubular bobbin-holder 39 is mounted and securely clamped to the bracket by a set-screw or any suitable means. Said bobbin-holders 39 are preferably cylindrical in form and flaring at their upper ends, their internal diameters being slightly greater than the external diameter of an empty bobbin. The lower ends of said holders 39 terminate closely ad= jacent the upper side of the casing 32 when the latter is in its normal position, as shown in Fig. 4.

A series of bobbin-magazines 450 are rigidly supported in any suitable manner upon the frame, one of said ma azines bein arranged over each bobbin-1101 er 89. Bee 1 of these magazines is provided with guidin sides 41 at the top and bottom thereof whio flare at their front ends, sum'cient space being pro= vided between the top and bottom portions of said sides to permit a bobbin resting against the rear side of the magazine to be reached with the hand, so that the bobbins may be readily placed in and removed therefrom.

The bottom as of each magazine extends obliquely downward from the front to the rear side thereof, and its lower end terminates in an upturned lip as at such a distance from the rear side of the magazine that a bobbin may readily pass between said lip and said side. A narrow slot as is formed in the middle of said lip and in theadjacent portion of said bottom, said slot being of less width than the diameter of a bobbin and of sumcient width is reg rag

to permit the passage therethrough of a finger 45, which is secured to the front side of each bobbin-holder 39 and extends upwardly and forwardly therefrom in an oblique direction, its extreme end portion preferably extending vertically.

WVhen the bobbins are thrown into the magazine, they will slide down the inclined bottom, and the first bobbin will be caught at its lower end by the lip 43, and its upper end will tip forward and rest against the rear side of the magazine, the other bobbins which may be thrown therein lying against the first bobbin, as shown in Fig; 3. The openings in the bottoms of the magazines between the lips 43 and the rear sides thereof are directly above or in line with the passage through the bobbin-holders 39, so that when the carrier 5 is raised the ends of said tubular holders will come into register with the openings in the bottoms of the magazines.

As the carrier is raised, so that the upper ends of the holders engage the bottoms of the magazines, the fingers 45 will pass through the slots 43 of the magazines, and their upturned ends will enter the bore ofthe bobbins which lie next to or against the bobbins which are resting against the lips 43 and will lift them up over said lips, as indicated in Fig. 4, so that they will slide down the inclined sides of said fingers and fall into and through the tubular bobbin-holders until their lower ends rest on the upper side of casing 32, as shown in dotted lines in Fig. 4. When the carrier is lowered, the bobbins which were engaged by the upturned ends of the fingers 45 will be permitted to move to the position of the bobbins previously discharged into the holders.

While the machine is operating the carrier 5 will be lifted to its uppermost position, as shown in Figs. 1 and 4, and an empty bobbin will be disengaged from the magazine and be supported on the casing 32 in each holder 39. When the bobbins which are on the spindles have been filled, the ring-rail which guides the thread upon the bobbin is moved down to its lowest extent, as indicated in Figs. 2 and 3, and the machine is stopped. The pawl l7 is then lifted, so that the carrier 5 may be permitted to slide down the guide-rods 4 until the doffers 22 pass over the upper ends of the bobbins, the flaring lower ends of said doifers guiding the bobbins into the tubular portions thereof. When the doffers have been moved down to such an extent that the latches 23 are opposite the grooves 30 in the bobbins, the latches will enter said grooves and connect the bobbins to the doffers, the parts assuming the position shown in Fig. 10. Then the carrier 5 is lifted, drawing the filled bobbins from the spindles. The carrier 5 is lifted to such a point that the lower ends of the filled bobbins are above the upper ends of the spindles, and then the hand-wheel 280 upon the rod 28 will be rotated, winding the cables 29 thereon and swinging the doifers and filled bobbins outwardly to the full-line position shown in Fig. 7, in which position they are held by the pawl and ratchet 281 282. The carrier is then lowered so that the lower edges of the casing 32 are close to the upper ends of the spindles 2. The cord 320 is then pulled, swinging the casing 32 forward from beneath the ends of the bobbin-holders, and as the empty bobbins in the latter will no longer be supported and as the holders are directly over the spindles the bobbins will fall and slide down upon the spindles, as shown in Fig. 7

In order that the bobbins may be secured to the spindles firmly enough to prevent them from flying off when the spindles are being rotated, it is necessary that they be pressed down upon the spindles with some force. To accomplish this result, the cord 320 is released, permitting the casing 32 to swing back to its normal position, and then the carrier is lowered until the presser-strap 33 in the casing is carried into engagementwith the upper ends of the bobbins, pressing them down to their correct positions, the flaring side walls of the casing guiding the ends of the bobbins against the strap.

While all of the bobbins which are used on 5 a certain spinning-frame are usually of approximately uniform length, yet on account of swelling and shrinkage of the wood and other causes'the diameters of the bores often vary to such an extent that one bobbin must be forced down on a spindleconsiderably farther than another in order that it may be firmly connected thereto. For this reason if a rigid or unyielding bobbin-engaging face were provided on the casing 32 only the bobbins having bores of the least diameter would be properly pressed down, while the others would still be loose upon the spindles. By providing the loosely-supported presser-strap 33 and by holding said strap down by rods 36 between each bobbin the strap may slide longitudinally over said rods and automatically adjust itself according to the distance which each bobbin must be forced down in order that it may be firmly secured to the spindle. In other words, each portion of the strap which actually engages a bobbin will yield to an extent corresponding to the bore of the particular bobbin against which a particular portion thereof is pressed, as illustrated in Fig. 11, with the result that each bobbin will be firmly pressed down in place on the spindles. The filled bobbins are then swung outwardly, breaking the threads, the carrier is raised to the position in Fig. 1, and the machine is started. The filled bobbins may then be removed by simply depressing the latch 23 of each doffer, a box preferably being held beneath them, so that the bobbins will drop therein.

As the carrier is raised to its uppermost position the bobbin-holders will be refilled in the manner previously described, and then. the apparatus will be ready for the next doffing operation.

While the bobbin-depressor performs the twofold function of a bobbin-support and a means for pressing the bobbins down on the spindles, it will be apparent that to combine these two functions in one device is more of a convenience than a necessity.

Having thus described my invention, whatv I claim 'as new, and desire to secure by Letters Patent, is

, 1. In combination with a spinning-frame, a vertically-moving carrier, a series of bobbinholders mounted thereon, means for automatically supplying empty bobbins thereto, aseries of ,doffers connected together and arranged to engage the upper ends of the bobbins while on the spindles, means for moving said doffers vertically to lift the filled bobbins from the spindles and means for moving the bobbin-holders to deliver the empty bobbins thereto, substantially as described.

2. In combination with aspinning-frame, a series of tubular bobbin-holders open'at both ends, means for discharging empty bobbins into the upper ends thereof, independent supporting means for engaging the lower ends of the bobbins while in theholders, means for holding said bobbin-holders in register with the spindles and for moving said supporting means transversely of the holder to permit the bobbinsto drop onto the spindles, substantially as described.

3. In combination with a spinning-frame, a series of tubular bobbin-holders arranged in a straight line and open at their lower ends, a bobbin-supporting means extending below the lower end of each holder, and in line with the line of said holders, means for holding the said. bobbin-holders in register with the spindles, and means for moving said supporting means to one side of the line of the holders to permit the bobbins to drop onto the spindles, substantially as described.

4:. In combination with aspinning-frame, a vertically-movable carrier, a series of bobbinholders mounted thereon, and open at their lower ends, a bobbin-support extending below the lower ends of each holder and pivotally connected to said carrier, said support being arranged to swing to one side of said holders to permit the bobbins to fall onto the spindles when said holders are moved into the register therewith, substantially as described.

I 5. In combination with a spinning-frame, a series of magazines,a series of bobbin-holders, meansfor simultaneously discharging a sin gle bobbin from each magazine into each holder, means for supporting the bobbins in the holders, means for simultaneously moving said holders so that the bobbins are carried into register with the spindles, and means for simultaneously releasing the bobbins in .the holders to permit the bobbins to drop upon the spindles, substantially as described. 6. In combination with a spinning-frame, a series of magazines, a series of bobbin-holders, means for simultaneously discharging a single bobbin into each holder, a series of doffers, means for causing said doffers to lift the filled bobbins simultaneously from the spindles and means for simultaneously discharging the empty bobbins in the holders upon the spindles after the filled bobbins have been lifted therefrom, substantially as described.

7. A doffer for spinning-frames comprising a hollow casing open at its lower end and adapted to pass over the tip of a bobbin, automatic engaging means therein for connecting the bobbin and easing when they are brought into engagement, and means for moving said casing vertically, substantially as described.

8. A doifer for spinning-frames comprising a hollow casing, open and flaring or bell shaped at its lower end and adapted to pass over the tip of a bobbin, automatic engaging means therein for connecting the bobbin and casing when they are brought into engagement, and means for moving said casing vertically, substantially as described.

9. In combination with a spinning-frame, a vertically-moving dofier havinga verticallyarranged cavity in its under side cylindrical at its upper end and flaring at its lower end, and a bobbin-engaging device'borne by said dofi'er adapted to connect the bobbin with the dofi'er when the bobbin enters said cavity, substantially as described.

10. In combination with a spinning-frame, a bobbin provided with an annular groove near its upper end, a vertically-movable doffer comprising a hollow casing open at its lower end, and a latch extending into said cup adapted to automatically enter the groove of the bobbin when the bobbin is within the cup, substantially as described.

11. In combination with a spinning-frame, a bobbin having an annular groove adjacent its tip, a dofier having a cavity, cylindrical at its upper end and adapted to fit on said tip, a latch havingone end normally held within said cavity in position to enter. said groove and movable to one side thereof, and means for moving said dofl'er vertically, substantially as described.

12. In-combinationwith a spinning-frame, a vertically-movable carrier, a series of bobbin-holders mounted thereon, and open at their lower ends, a bobbin-supporting means extending below thelower ends of each holder, means, pivotally connected to said carrier and suspended below said supporting means, for lifting the bobbins from the spindles, and means permitting movement of said supporting means to one side of said holders to permit the bobbins therein to fall onto the spindles, substantially as described.

13. In-cornbination with a spinning-frame, a carrier, a bobbin-holder mounted thereon, a bobbin-magazine arranged above said holder having an inclined bottom and with an opening at the lower end of said inclination through which a bobbin may pass, a stop adjacent said opening preventing the bobbins from sliding therethrough, means for moving said holder into register with said opening and for lifting the bobbin held by said stop over the stop to discharge the same into the holder, substantially as described.

14. In combination with aspinning-frame, a carrier, a bobbin-holder mounted thereon, a bobbin-magazine arranged above said holder having an obliquely-disposed bottom, and an opening therein at its lower end, a stop adjacent said opening to prevent the bobbins from sliding through said opening, said bottom having a slot in its lower end, a finger on said holder adapted to pass through said slot and to lift the bobbin held by said stop above the stop to discharge the bobbin into said holder, and means for sustaining the bobbin in the holder, substantially as described. 7

15. In combination with a spinning-frame, a vertically-movable carrier, an openended bobbin-holder mounted thereon, a bobbinmagazine arranged in and having its bottom inclined downwardly toward the path of movement of said holder and terminating at one side thereof, the lower end portion of said bottom being provided with a narrow slot, a stop at the lower end of and at one side of said slot, and an obliquely-disposed finger connected-to said holder and movable therewith through said slot and above said stop, substantially as described.

1 6. In combination with a spinning-frame, a vertically-movable carrier, an openended bobbin holder mounted thereon, a bobbinmagazine arranged in and having its bottom inclined downwardly toward the path of movement of said holder, and terminating at one side thereof, the lower end portion of said bottom being provided with a narrow slot, a stop at the lower end of and at one side of said slot, an obliquely-disposed finger connected to said holder and movable therewith through said slot and above said stop, said finger being of such length that it will extend beyond the base of the bobbin resting against said stop and will enter the bore of the next bobbin, substantially as described.

17. In combination with the spinning-frarne having a series of spindles, means for simultaneously supplying a bobbin to each of said spindles, and means, independent of said bobbin-supplying means, for pressing the bobbins down on the spindles after they have been placed thereon by said supplying means, substantially as described.

18. In combination with a spinning-frame having a series of spindles, a series of bobbincontaining holders, means for causing the bobbins to fall from said holders onto said spindles, and means for thereafter pressing the bobbins down on said spindles, substantially as described.

19. In. combination with a spinning-frame having a series of spindles, of a depressor arranged to engage the upper ends of said bobbins after they have been placed on the spindles, and to force them down on said spindles simultaneously, substantially as described.

20. In combination with a spinning-frame having a series of spindles, of a depressor for forcing the bobbins down on said spindles having a series of yielding bobbing-engaging portions, substantially as described.

21. In combination with a spinning-frame having a series of spindles, of a depressor for forcing the bobbins down on said spindles having a series of flexible, upwardly-yielding bobbing-engaging portions, substantially as described.

22. In combination with a spinning-frame having a series of spindles, of a depressor for forcing the bobbins down on said spindles comprising a flexible band or strap extending over the ends of the spindles, and means for supporting the upper sides of said band between each spindle, substantially as described.

23. In combination with a spinning-frame having a series of spindles, of a depressor for forcing the bobbins down on said spindles comprising two parallel walls extending divergently at their lower edges and longitudinally of the line of spindles, and a bobbinengaging device between said walls and connected thereto, and means for moving said depressor vertically, substantially as described.

Ql. In combination with a spinning-frame having a series of spindles, of a depressor for forcing the bobbins down on said spindles, comprising an elongated casing, a flexible strap or band connected at its ends to said casing and a series of transversely-extending bars connected to said casing above said strap or band and between each spindle, substantially as described.

25. In combination with a spinning-frame, a series of bobbin-magazines, each comprising a downwardly-inclined bottom, side supports, an end support at the lower end of the "bottom, and between said side support, said bottom having a bobbin-discharge opening at its lower end and a stop adjacent said opening, and means for lifting the bobbins separately over said stop and causing them to pass through said opening, substantially as described.

26. In combination with a spinning-frame, a series of bobbin-magazines each comprising a downwardlyinclined bottom, parallel side supports for the upper and lower ends of the bobbins providing an open space between them, an end support at the lower end of the bottom and between said side support,

IIS

said bottom having a bobbin-discharge opening at its lower end and a stop adjacent said opening, and means for lifting the bobbins separately over said stop and causing them to pass through said opening, substantially as described.

In testimony whereof I have signed my name DENNIS E. CAREY Witnesses:

SEYMOUR J. LEIGHTON, LoUIs H. HARRIMAN. 

